Early hits:
- "What Makes You Beautiful" (2011)
- "Gotta Be You" (2011)
- "One Thing" (2012)
- "Live While We're Young" (2012)
- "Little Things" (2012)
Later hits:
- "Best Song Ever" (2013)
- "Story of My Life" (2013)
- "Midnight Memories" (2013)
- "You & I" (2014)
- "Steal My Girl" (2014)
Solo careers:
- "Sign of the Times" (Harry Styles, 2017)
- "Pillowtalk" (Zayn Malik, 2016)
- "Drag Me Down" (One Direction without Zayn Malik, 2015)
- "Infinity" (Liam Payne, 2018)
- "Slow Hands" (Niall Horan, 2017)
- "Issues" (Julia Michaels, 2017) [co-written by Louis Tomlinson]
Collaborative projects:
- "I Don't Wanna Live Forever" (Zayn Malik & Taylor Swift, 2016)
- "No Lie" (Sean Paul & Dua Lipa featuring One Direction, 2016)
- "Home" (Liam Payne & Cheryl Cole, 2017)